Autoware’s adi_driver Subtree

This directory is part of a subtree fetched from https://github.com/CPFL/adi_driver on the Autoware branch, a fork from the original https://github.com/ros-drivers/velodyne

This repo adds specific functions for Autoware. If you need to modify any file inside this folder structure, please use the following commands to either push or fetch changes from the subtree. All the commands written here will suppose you’re in the root of Autoware path.

Pulling in commits from the repository subtree

Bring latest commits from https://github.com/CPFL/adi_driver

git subtree pull --prefix ros/src/sensing/drivers/imu/packages/analog_devices https://github.com/CPFL/adi_driver Autoware --squash

Pushing changes to the repository subtree

If you made any modification to the subtree you are encouraged to commit and publish your changes to the fork. You can do with the following command.

git subtree push --prefix ros/src/sensing/drivers/imu/packages/analog_devices https://github.com/CPFL/adi_driver Autoware

Original README below

adi_driver Build Status

This package contains ROS driver nodes for Analog Devices(ADI) sensor products mainly communicate by SPI(Serial Periferal Interface).

Currently supported devices are:

  • ADIS16470
    • Wide Dynamic Range Mini MEMS IMU
  • ADXL345:
    • 3-Axis, ±2 g/±4 g/±8 g/±16 g Digital Accelerometer
    • The support for this device is experimental

You need a SPI interface on your PC to communicate with device. This package supports Devantech’s USB-IIS as the USB-SPI converter.

USB-IIS

Overview

USB-IIS is a USB to Serial/I2C/SPI converter, simple, small and easy to use. You don’t need any extra library like libusb or libftdi. The device is available on /dev/ttyACM* as modem device.

Please consult the product information and SPI documentation for the detail.

Tips

You need to remove the jumper block on Power link pins to provide 3.3V for the device.

You need to add your user to dialout group to acces /dev/ttyACM* .

$ sudo adduser your_user_name dialout

If it takes several seconds until /dev/ttyACM* available, you need to uninstall modemmanager as:

$ sudo apt remove modemmanager

ADIS16470

Overview

ADIS16470 is a complete inertial system that includes a triaxis gyroscope and a triaxis accelerometer.

You can use Breakout board for easy use.

Connection

You need to build a flat cable to connect the USB-ISS and the ADIS16470 breakout board. The picture shows a implementation.

Very simple schematic is here. J1 is the USB-ISS pin and J2 is the 2mm pin headers on the ADIS16470 breakout board.

Note: you only need to connect one of the power-line(3.3V and GND). They are connected in the breakout board.

BOM

  • J1: 2550 Connector 6pin
  • J2: FCI Connector for 1.0mm pitch ribon cables
  • 1.0 mm pitch ribon cable

Quick start

Connect your sensor to USB port. Run the launch file as:

$ roslaunch adi_driver adis16470.launch

You can see the model of ADIS16470 breakout board in rviz panel.

ADXL345

Overview

The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g. At this moment, support for this device is experimental.